I agree with the previous post that an intervention is needed; but, even then, you have to be willing to accept that he might not be willing to see and deal with his problem... The ONLY person you can change is YOURSELF; and, the best way to do that is by educating yourself about what you're up against in this relationship. The best way to do this is by going to Al-Anon and to open AA meetings. When dealing with alcoholics, things are often not only difficult but "backwards," as well. "Enabling" them can be the worst thing you can do "for" an alcoholic, since it only helps them to perpetuate their denial. Helping "their bottom" to conk them right between the eyes, while they still have some semblence of a life left, can be the kindest thing you can do for them, even though they'll probably hate you for it at the time...
The best of luck to -- if you stay in this relationship, you're gonna' need it.....